rossbcan

@hotnikq Can you please share your SD card detection messages. First establish where it is? mmcX? EG: "dmesg | grep mmcX" and "cat /var/log/syslog | grep mmcX" I believe my SD reader is at mmc0 (mmc@fe2b0000) and here's dmesg (syslog same) out: mmc_host mmc0: Bus speed (slot 0) = 375000Hz (slot req 400000Hz, actual 375000HZ div = 0) mmc_host mmc0: Bus speed (slot 0) = 375000Hz (slot req 375000Hz, actual 375000HZ div = 0) controller detected, card not. Thanks; Bill

@hotnikq I soldered in SD Card holder. Are you sure about "Detect SD-CARD" success you reported? I don't see it. Can you confirm the sd card is wired to mmc@fe2b0000? Here's relevant dts snippet: mmc@fe2b0000 { compatible = "rockchip,rk3568-dw-mshc\0rockchip,rk3288-dw-mshc"; reg = <0x00 0xfe2b0000 0x00 0x4000>; interrupts = <0x00 0x62 0x04>; clocks = <0x0e 0xb0 0x0e 0xb1 0x0e 0x18a 0x0e 0x18b>; clock-names = "biu\0ciu\0ciu-drive\0ciu-sample"; fifo-depth = <0x100>; max-frequency = <0x8f0d180>; resets = <0x0e 0xd4>; reset-names = "reset"; status = "okay"; supports-sd; bus-width = <0x04>; cap-mmc-highspeed; cap-sd-highspeed; cd-gpios = <0x21 0x04 0x01>; disable-wp; pinctrl-names = "default"; pinctrl-0 = <0x60 0x61 0x62 0x63>; vmmc-supply = <0x1b>; phandle = <0xf6>; }; Thanks; Bill